On the contrary, it is 100% relevant. If an author allows the book to be loaned, the author has no grounds for complaint if the book is loaned. The authors freely chose to allow lending. You could forbid authors selling their works, thus it does make sense that you would find irrelevant the agreements the authors made. After all, only the decrees of the book commissar mean anything...

Who is the author? How can anyone create anything when it has all already been created? When the infinite is taken whole, ownership, among other things dissolves.